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One of the
first successes in color photography was
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demonstrated
in 1861 by the Scottish physicist
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James Clerk
Maxwell (1831 - 1879).
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Maxwell
devised a way to recreate the colors of a tartan
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ribbon. He had
three negatives of the ribbon made, each
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through a
different color filter - red, green and blue.
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Positive black
and white transparencies were
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made of the
three negatives. While projected
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superimposed
though three color filters like
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those on the
camera, the three positives
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produced an
image of the ribbon in it’s original
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colors.
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This technique
is called “additive color mixing”.
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Colors are
produced by adding together varying
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amounts of red,
green and blue.
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